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Java Dapr-AKS-ACA Workshop

Running Applications without using Dapr

Table of contents

In this assignment, you’ll run the application to make sure everything works correctly.

Assignment goals

To complete this assignment, you must reach the following goals:

  • Apache Kafka - either run as a docker container (see below) or install and run on your machine (download)
  • All services are running.
  • The logging indicates that all services are working correctly.

Step 1. Running Kafka using Docker or Rancher Desktop

From the root of source code folder, run the following command to configure and start Kafka from your locally installed Docker or Rancher Desktop:

docker-compose up -d

This command will read the docker-compose.yml file located within the root folder and download and run Kafka containers for this workshop.

Step 2. Run the VehicleRegistration service

  1. Open the source code folder in your code editor.

  2. Open a terminal window.

  3. Make sure the current folder is VehicleRegistrationService.

  4. Start the service:

    mvn spring-boot:run

If you receive an error here, please double-check whether or not you have installed all the prerequisites for the workshop!

Step 3. Run the FineCollection service

  1. Make sure the VehicleRegistrationService service is running (result of step 1).

  2. Open a new terminal window.

  3. Make sure the current folder is FineCollectionService.

  4. Start the service:

    mvn spring-boot:run

Step 4. Run the TrafficControl service

  1. Make sure the VehicleRegistrationService and FineCollectionService are running (results of step 1 and 2).

  2. Open a new terminal window and make sure the current folder is TrafficControlService.

  3. Start the service:

    mvn spring-boot:run

Step 5. Run the simulation

Now you’re going to run the simulation that actually simulates cars driving on the highway. The simulation will simulate 3 entry- and exit-cameras (one for each lane).

  1. Open a new terminal window and make sure the current folder is Simulation.

  2. Start the simulation:

    mvn spring-boot:run

  3. In the simulation window you should see something like this:

    2021-09-15 13:47:59.599  INFO 22875 --- [           main] dapr.simulation.SimulationApplication    : Started SimulationApplication in 0.98 seconds (JVM running for 1.289)
2021-09-15 13:47:59.603  INFO 22875 --- [pool-1-thread-2] dapr.simulation.Simulation               : Start camera simulation for lane 1
2021-09-15 13:47:59.603  INFO 22875 --- [pool-1-thread-1] dapr.simulation.Simulation               : Start camera simulation for lane 0
2021-09-15 13:47:59.603  INFO 22875 --- [pool-1-thread-3] dapr.simulation.Simulation               : Start camera simulation for lane 2
2021-09-15 13:47:59.679  INFO 22875 --- [pool-1-thread-2] dapr.simulation.Simulation               : Simulated ENTRY of vehicle with license number 77-ZK-59 in lane 1
2021-09-15 13:47:59.869  INFO 22875 --- [pool-1-thread-3] dapr.simulation.Simulation               : Simulated ENTRY of vehicle with license number LF-613-D in lane 2
2021-09-15 13:48:00.852  INFO 22875 --- [pool-1-thread-1] dapr.simulation.Simulation               : Simulated ENTRY of vehicle with license number 12-LZ-KS in lane 0
2021-09-15 13:48:04.797  INFO 22875 --- [pool-1-thread-2] dapr.simulation.Simulation               : Simulated  EXIT of vehicle with license number 77-ZK-59 in lane 0
2021-09-15 13:48:04.894  INFO 22875 --- [pool-1-thread-3] dapr.simulation.Simulation               : Simulated  EXIT of vehicle with license number LF-613-D in lane 0

  4. Also check the logging in all the other Terminal windows. You should see all entry- and exit events and any speeding-violations that were detected in the logging.

Now you know the application runs correctly. It’s time to start adding Dapr to the application.

Next assignment

Make sure you stop all running processes and close all the terminal windows before proceeding to the next assignment. Stopping a service or the simulation is done by pressing Ctrl-C in the terminal window.

< Spring for Apache Kafka Usage Assignment 2 - Run with Dapr >